Fuel-oil burner



0.1. DOHSEY.

FUEL OIL BURNER.

APPLlcATxoN man mm2, |921.

1,410,389. v Patnted Mfu- 21, 1922.

. UNITED STATES PATENT oFFicE.

DAVID J'. DORSEY, 0E BATON ROUGE, LOUISIANA.

FUEL-OIL BURNER.

Specication of Letters Patent. Patented Mair. 21, 1922.

Application led April 22, 1921. Serial No. 463,669.

` appertains to make and use the same.`

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' view on the line 4 4 of Figu This invention relates to new and useful improvements in burners and particularly to oil burners.

The object of the invention is tc provide an oil burner for use in connection with steam generating boilers, wherein novel means are provided for mixing steam with the oil to burn therewith, at the tip.` or

.nozzle of the burner.

Another object is to so construct aburner of this character vthat when the portion which is normally subjected to the greatest wear, due to the heat of the burning' oil and steam, becomes worn, it may be readily removed and a new part substituted, thus obviating the necessity of supplying a new burner. Another object is to provide a steam jet nozzle which can be easily and quickly removed and replaced, when repairs or adjustments are needed, and which is held tightly in position to effectively prevent leakage'of oil.

'()ther objects and advantages will be apparent fnom the following description when taken in connection with the accompanying drawing.

' In the drawing:

Figure 1 is a side elevation of a burner made in accordance with the invention.

Figure 2 is a top plan view of the same, the steam and oil ipes being omitted.

Figure 3 is a vertical longitudinal central sectional view through the burner.

Figure 4 is a vertical transverse sectional Figure' 5 is a plan view of the removable burner tip plate.

Referring particularly to the accompanying drawing, 10 represents a metal housing or casing having the chamber 11 therein, said casing being open at its lower side, and forward end, as shown at 12 and 13, respectively. Screwed into the upper portion of the rear wall of the casing is the oil pipe 14, the same being arranged to deliver oil into the casing. A steam pipe 15 is loosely engaged through an opening 10 in the rear wall of the casing 10, below the oil pipe 14. The pipes 14 and 15 connect with a pipe 16, one portion 1 6 of which extends to a source of oil supply, while the other portion 16" extends to a source of steam supply, neither of the said supplies being shown. A Valve 17 is disposed in the pipe 16, between the points of connection of pipe 16. By this arrangement, when the valve is open, steam will flow into and through the pipe 15 to drive out any remaining oil. Normally the valve is closed so that the Voiland steam do not mingle until they reach the nozzle of the burner. Removably disposed in the lower portion end o-f the steam pipe screwed thereinto, is

`a trapezoidal chamber 18, the same bein formed with a passage 19 therethrou h an over the forward end of which iS ormed a metal plate 20, the same being the upper wall of the chamber 18. Engaged on the pipe 15, and bearing against the rear wall of the casing 10, is a packing washer 15', the same being pressed against the wall by the nut 15, which is screwed onto the pipe 15. This permits the chamber to be drawn tightlyagainst the innerface of said rear wall, while the washer is pressed against the outer face thereof, with the result that leakage of oil is prevented.

The lower portion of the front wall of the chamber 18 is formed with a forwardly and outwardly flared opening 21, which, when the device is in proper position, and in conjunction with the wall 20, of the chamber, produces an elongated slot through which the steam is projected. The oil iiows into the chamber 11, from the pipe 14, and drips onto the inclined wall 20, from whence it runs down past the slotl of the chamber 18. The steam, issuing from the slot, draws the oil down and mingles therewith, and projects the mixture beyond the casing 10, where it burns, on the upper face of the removable plate to be mentioned later herein.

Disposed against the bottom of the casing 10 is a metal plate 22, the forward end of which projects beyond the front of the casing, as shown at 23. The upper face of the plate 22 is formed with an angular boss 24 the pipes 14 and 15 with saidv f of the casing 10, and having the adjacent, j y

which fits up into the lower portion of the formed on the chamber 11, and forwardly from the forward open end of the casing. A pair of apertured lugs 22, extending from the opposite sides of the plate 22, to receive the screws 25, are formed on the opposite side edge portions of the plate 22, said screws being engaged upwardly into the bosses 26, side walls of the casing. Disposed on the plate 22, and secured to the side walls of the casing 10, by the screws 22', is a removable combustion plate 27, the same extending forwardly on the projecting portion 23 of the plate 22, It will be noted that the screws 25, which secure the plate 22 to the casing, do not pass through the removable combustion plate 27, and that the screws 22 are concealed by the plate 22. The outer end of the plate 27 is wider than the casing to provide a broad surface `on which the flame is formed. i

The mixture of steam and oil, which issues from the slot of the chamber 18, is directed against the upper face of the projecting end of the plate 27, where said mixture is burned. When the plate 27 wears out', due to the great heat thereon, at the point of combustion of the oil and steam, the removal of the screws 25 will permit the removal of the plate 22, which uncovers the screws 22, when these latter screws may be taken out and the plate 27 removed and a new onefsubstituted. This bviates the necessity 'of replacing the whole burner, when the tip has been burned out. Furthermore, the oil being fed onto the upper wall of the casin or chamber 18, becomes heated and is partiall volatilized before coming into contact witii the steam, with the result that the mixture of the oil and steam is more readily and effectively accomplished, and a better and hotter flame formed.

What is claimed is:

An oil burner including a casing having oil and steam inlets in one end and a common discharge opening in the other end, the casing having an oil passage leading from the upper portion downwardly to the discharge opening, a steam nozzle arranged to discharge beneath the oil passage, a renewable plate fastened within'the casing and extending outwardly therefrom in position to receive the steam and oil in combustion thereon, and a removable bottom plate for the burner, said plates being secured independently to the burner.

In testimony whereof, I affix my signature, in the presence of two witnesses.

DAVID J.` DonsEY.

Witnesses:

W. M. BENTON, MAUDE KEAN. 

